WO2007072319A1 - Schemas de coordonnees destines a l'adressage d'affichages matriciels a base de del - Google Patents

Schemas de coordonnees destines a l'adressage d'affichages matriciels a base de del Download PDF

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Publication number
WO2007072319A1
WO2007072319A1 PCT/IB2006/054800 IB2006054800W WO2007072319A1 WO 2007072319 A1 WO2007072319 A1 WO 2007072319A1 IB 2006054800 W IB2006054800 W IB 2006054800W WO 2007072319 A1 WO2007072319 A1 WO 2007072319A1
Authority
WO
WIPO (PCT)
Prior art keywords
lighting elements
controllable lighting
output information
display system
controller
Prior art date
Application number
PCT/IB2006/054800
Other languages
English (en)
Inventor
Robin John Blackwell
Neil Foston
Original Assignee
Koninklijke Philips Electronics N. V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics N. V. filed Critical Koninklijke Philips Electronics N. V.
Priority to EP06842474A priority Critical patent/EP1966784A1/fr
Priority to JP2008546739A priority patent/JP2009521006A/ja
Publication of WO2007072319A1 publication Critical patent/WO2007072319A1/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant

Definitions

  • the present invention relates to display devices and control thereof, particularly to addressing schemes of LED-based matrix displays.
  • LEDs can be used in a matrix configuration to act as a display for multimedia content, e.g. a video wall or screen display. LEDs can be arranged in a variety of configurations to create matrix displays of varying size and shape. Therefore a simple mechanism is required to both describe and control these varying matrix type devices using information in various forms and coordinate systems.
  • a novel display system includes controllable lighting elements having a control configuration; and a controller configured to query the lighting elements to determine their configuration.
  • the controllable lighting elements include light emitting diodes (LEDs), for example.
  • the controller is further configured to translate input information into output information in accordance with the control configuration for control of the lighting elements, where the lighting elements display a pattern in accordance with the output information.
  • the pattern may be displayed by masking desired ones of the lighting elements, where mask-based addressing compresses and reduces the size of the output information.
  • the input and output information includes different coordinate addressing information.
  • the controller and lighting elements communicate with each other through a network, for example, where the network detects a new connection thereto of the lighting elements and inform the controller of their presence. Alternatively or in addition, the lighting elements provide their control configuration to the controller upon connection to the network and/or upon receiving a request from the controller.
  • the LEDs may be configured as an array or matrix of LEDs having any desired shape which may efficiently display images of different shapes.
  • Different addressing schemes for differently shaped matrices are used to substantially reduce the number of (or possibly eliminate) unnecessary LED modules in an LED display device.
  • Respective addressing coordinates are computed by the controller which maybe a device separate from the LED display or integrated into the LED display for example, thus optimizing the control of the LED display.
  • the controller which maybe a device separate from the LED display or integrated into the LED display for example, thus optimizing the control of the LED display.
  • any type of display may be used that is configured to have addressable pixels, where LED displays or matrices are referred to herein as exemplary display devices.
  • a color pixel may be a set three LEDs, namely, red, green and blue LEDs.
  • the display may be black and white instead of color, where different grey scales are used to form images.
  • LED matrices or arrays arranged as a display device in a lighting network system are configured to operate efficiently, such as efficiently displaying high quality images of various shapes, despite interacting with controllers that are configured to operate under a coordinate system which is different from the coordinate system of the LED display, or despite images that have descriptions in different coordinate systems.
  • a particular shape which has a Cartesian description may be efficiently displayed on the LED display configured to better display images having polar coordinates or addresses via the controller that is configured to translate Cartesian addresses/coordinates to polar addresses/coordinates.
  • each coordinate point of an LED matrix is mapped to a single LED module placed at the exact physical position.
  • Cartesian and polar matrices, or other coordinate addressing schemes may be used to address individual LEDs, including transformation between the different coordinate schemes. It should be understood that the usage of particular systems, schemes, techniques, and methods disclosed herein is not however limited to only LED-matrix devices, but could also be appropriately applied, for example, to TV screens, signage, and other types of displays that will be recognized by those skilled in the art.
  • An LED matrix may be configured, for example, to use polar coordinates.
  • the supporting matrix controller for instance, understands only Cartesian coordinates.
  • a central controller in the system (which may also be integrated with the LED matrix) may be enabled to understand the use of polar coordinates, and to transform Cartesian coordinates into polar coordinates
  • the display system uses multiple coordinate addressing schemes, and mask-based and geometric descriptions of addressing schemes, to describe LED-based matrix displays, including transformation between different coordinate addressing schemes.
  • coordinate addressing schemes and mask-based and geometric descriptions of addressing schemes, to describe LED-based matrix displays, including transformation between different coordinate addressing schemes.
  • three-dimensional schemes are also equally applicable, e.g. spherical, cylindrical, and so on.
  • FIG 1 is a diagram of a regular square shaped 4x4 LED matrix
  • FIG 2 is a diagram of a LED matrix using polar coordinates
  • FIG 3 is a sample diagram of mask based pattern description
  • FIG 4 is a schema of transformation from Cartesian to polar coordinates, wherein the X coordinate is transformed into Radius (1st polar coordinate), and the Y coordinate is transformed into Angle (2nd polar coordinate);
  • FIG 5 is a schema of transformation from Cartesian to triangular coordinates, wherein the Y coordinate is transformed into the corresponding coordinate for the axis having an angle less than 90 degrees with the horizontal axis;
  • FIG 6 is a partial schema of a lighting network including a lighting controller device and a lighting matrix device;
  • FIG 7 is an exemplary LED matrix device description code written in
  • FIG 8 is an exemplary coded command to the LED matrix device written in XML
  • FIG 9 is a diagram displaying a monochromatic (e.g. red) circle-like shape in polar coordinates.
  • FIG 1 illustrates a rectangular two-dimensional 4x4 matrix or array of LEDs 100, each element of which is represented by an LED module or RGB pixel 105.
  • the array 100 may be combined with other arrays or may be any desired size or shape and have any desired number of pixels or LEDs to form an LED display.
  • FIG 2 depicts a LED matrix 150 described in polar coordinates.
  • Images or different shapes may be displayed on an LED display, configured in any coordinate system whether Cartesian, polar or three-dimensional, using a mask-based addressing scheme, e.g. to describe read-green-blue (RGB) triplets constituting each pixel of a matrix.
  • FIG 3 illustrates the use of a mask-based pattern description 200 and the resultant matrix pattern 210 of nine activated monochromatic (e.g. red) LEDs 220.
  • the mask-based scheme for addressing can also be used to describe irregularly shaped matrices. For example, an irregular shape could be defined as a masked square or in a Cartesian coordinate scheme, such that LEDs are only present in specific areas of the mask.
  • a mask can be used to describe any shape, or for regular shapes, such as arcs or circles.
  • the shapes can be alternatively geometrically described as Circle(Radius), Arc(Radius, StartAngle, EndAngle), for example.
  • Various masks may be used, such as geometric masks and/or fully descriptive masks. Further, it should be noted that masks may also be used for device discovery.
  • Transformation procedure may be used in cases where devices in a system use different coordinate schemes.
  • an LED matrix may be configured, e.g. using polar coordinates, but the supporting matrix controller, for instance, understands only Cartesian coordinates.
  • a central controller 310 in a display system 300 may be enabled to understand polar coordinates, and to transform Cartesian coordinates into polar coordinates, and vice versa. That is, the central controller 310 is configured to map the polar coordinates to the Cartesian coordinates, to be understood by a matrix controller or driver 320 of a lighting matrix display device 330, and displayed by the matrix display 340. Similar transformation of coordinates can be used where an LED matrix uses a coordinate addressing scheme that is not understood by the central controller in the lighting system. In such a case, the matrix controller can be configured to enable transforming of the coordinate addressing scheme understood by the central controller to the coordinate addressing scheme understood by the matrix controller.
  • FIG 4 shows a transformation from Cartesian to polar coordinates for each of the pixel 1-10, wherein the X coordinate, on the left graph of FIG 4, is transformed into the Radius (1st polar coordinate on the right graph of FIG 4) specified by the X coordinate, and the Y coordinate, on the left graph of FIG 4, is transformed into the Angle (2nd polar coordinate on the right graph of FIG 4) specified by the Y coordinate.
  • FIG 5 shows a y-axis transformation from Cartesian to triangular coordinates for each pixel, wherein the Y coordinate, on the left graph of FIG 5, is transformed into the corresponding coordinate on the right graph of FIG 5, by tilting the y-axis by any desired angle, such as less than 90 degrees in the positive x-direction, for example.
  • FIG 6 shows a display system 300 including a lighting network 350, comprising a lighting controller device 310 and a lighting matrix device 330.
  • the lighting controller device 310 comprises a lighting network driver 360 communicating with the network 350, and a user interface 365 communicating to the lighting network driver 360, and allowing configuration of the lighting controller device 310.
  • the lighting matrix device 330 comprises a lighting network driver 370 communicating with the network 350, an LED driver 320 communicating with the lighting network driver 370, and a LED matrix 340 controlled by the LED driver 320.
  • a user through the user interface 365 of the lighting controller device also referred to as a central controller 310, may configure it to enable the addressing scheme transformation procedure, particularly with the lighting matrix 330 that could have a different coordinate addressing scheme.
  • the LED matrix 340 for example, may be configured using polar coordinates, where each LED pixel of the matrix is capable of displaying 8- bit Red, Green, and Blue color.
  • other embodiments may have different transformation means to enable the addressing scheme transformation procedure, for example by means of a transformation device configured to recognize and understand the description of the display device's addressing scheme and translate it into the control device's addressing scheme.
  • the same or different transformation device may be able to translate back the commands, generated by the control device, from the control device's addressing scheme into the display device's addressing scheme. This will enable the display device to execute the commands and display images accordingly.
  • Such transformation device may be incorporated either into the control device or into the display device, or be installed separate. It also may be embodied as a piece of hardware, firmware, software on any suitable medium, or a combination thereof.
  • data compression techniques may be used, such as run length encoding, to reduce the data traffic, processing power, and processing time.
  • Many different methods and techniques for data compression may be used such as those disclosed in U.S. Patent Application Publication No. US 2003/0076288 Al, which is incorporated by reference in its entirely, and describes a matrix display driver receiving compressed data input, decoding in parallel the compressed data by individual decode modules for each column line with the use of a two-stage decoding: the decoding of Huffman-coded data, encoded based on the frequency of particular signals, and the decoding of run length encoded data, wherein the compression algorithms use data redundancy to reduce bandwidth requirements.
  • the lighting or central controller 310 is configured to carry out the following:
  • the lighting matrix device or controllable lighting elements 330 (having, e.g. a polar coordinate addressing scheme) and the lighting controller 310 (having, e.g. a Cartesian coordinate addressing scheme) are connected to the same network 350.
  • the network 350 indicates to the controller 310 that a new device (matrix device 330) is present in the network 350;
  • the matrix device 330 returns the description of the matrix device's coordinate scheme (in this exemplary case, it's of the polar type, having three attributes: MaxRadius, RadiusStep, AngleStep) being a first part of the addressing scheme of the matrix device, and a geometric description (in this case, specified on FIG 7 between the tags ⁇ ServiceDescription> and ⁇ / ServiceDescription> using a pre-programmed function DrawFilledCircle implementing an algorithm of executing the function with four state variables or parameters: Radius, RedValue, GreenValue, BlueValue) being a second part of the addressing scheme of the matrix device, which both parts are encoded using XML, for example, as shown in FIG 7.
  • device discovery is not absolutely essential. Some networks e.g. XlO, DMX do not support it but the system could still work. Devices could be dedicated to coordinate schemes and be matched by an installer. Alternatively devices may be configured by an installer (software download, DIP switch settings) to work with certain coordinate schemes. However a device discovery network, if available, facilitate and improve the implementation.
  • Multiple Commands can of course be aggregated into a single control message for efficiency. The same command could also be multi-casted to multiple displays at once.
  • the LED matrix 340 displays a resultant image, created according to the matrix' description, in the form of a plurality of circumferentially positioned activated monochromatic pixels 400 of the matrix, depicted on FIG 9.
  • FIGs 7-8 are snippets/fragments, rather than fully formed formal XML codes, where for clarity e.g. namespaces and headers are included.
  • Those skilled in the art would also understand that there are other possible ways to structure such instructions or commands in XML or any other type of code or software. That is, in the given examples shown in FIGs 7-8, the descriptions and the commands are XML type, but generally it can be encoded in other suitable formats as well. It also may include a mask-based part of the addressing scheme of the matrix device, similar to that illustrated on FIG 3.
  • the display system 300 allows the use by a number of controllers, or pieces of computer hardware, firmware, software, other devices or media, or a combination thereof, of different coordinate addressing schemes, including the polar coordinate scheme or any other, for addressing of discrete lighting elements (pixels) or certain areas of the display, for example, to reduce the necessary number of such elements, to optimize the data processing, to efficiently utilize a particular shape or other properties of the display devices.
  • Such use encompasses the ability to control the display devices, e.g., connected to a network, and the ability of the devices to interoperate with each other, even though they operate in different coordinate addressing schemes.
  • the controller may be any type of controller or processor, such as those described in U.S. 2003/0057887, that are capable of receiving and providing VO signals, executing instruction stored in a memory, which may be any type of memory, RAM, ROM, removable memory, CD-ROM, and the like, also as described in U.S. 2003/0057887. It should be understood the various control and driver functions may be implemented by hardware, software, firmware and the like, alone or combinations. Further, the controllers/drivers may be physical devices that are may be separate units alone or in combination with other units, or integrated and part of other units, such as being part of or integrated with the lighting matrix device 330.
  • preexisting circuitry of the lighting matrix device 330 may be modified, via software, firmware and/or hardware modifications and/or additions, to provide the desired functionality of the controllers and/or drivers.
  • processors, memories storing instructions to be executed by the processor, and other elements may be included in the display system as needed.

Abstract

L'invention concerne un système d'affichage (300) comprenant des éléments d'éclairage (330) pouvant être commandés, ayant une configuration de commande ; et un contrôleur (310) conçu pour interroger les éléments d'éclairage (330) afin de déterminer leur configuration. Les éléments d'éclairage (330) pouvant être commandés comprennent des DEL. Le contrôleur (310) est également conçu pour traduire des informations d'entrée en informations de sortie en fonction de la configuration de commande, afin de commander les éléments d'éclairage, les DEL affichant un motif en fonction des informations de sortie. Ce motif peut être affiché par masquage de DEL désirées, l'adressage par masquage permettant de comprimer les informations de sortie et de réduire leur taille. Les informations d'entrée et de sortie comprennent différentes informations d'adressage de coordonnées.
PCT/IB2006/054800 2005-12-23 2006-12-13 Schemas de coordonnees destines a l'adressage d'affichages matriciels a base de del WO2007072319A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06842474A EP1966784A1 (fr) 2005-12-23 2006-12-13 Schemas de coordonnees destines a l'adressage d'affichages matriciels a base de del
JP2008546739A JP2009521006A (ja) 2005-12-23 2006-12-13 Ｌｅｄに基づくマトリックスディスプレイをアドレス指定するための座標方式

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05112863.5 2005-12-23
EP05112863 2005-12-23

Publications (1)

Publication Number Publication Date
WO2007072319A1 true WO2007072319A1 (fr) 2007-06-28

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PCT/IB2006/054800 WO2007072319A1 (fr) 2005-12-23 2006-12-13 Schemas de coordonnees destines a l'adressage d'affichages matriciels a base de del

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Country Link
EP (1) EP1966784A1 (fr)
JP (1) JP2009521006A (fr)
CN (1) CN101346752A (fr)
TW (1) TW200733041A (fr)
WO (1) WO2007072319A1 (fr)

Cited By (5)

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Publication number Priority date Publication date Assignee Title
EP2257131A1 (fr) * 2009-05-29 2010-12-01 Koninklijke Philips Electronics N.V. Procédé d'auto-adressage pour système d'éclairage à carreaux
US9127820B2 (en) 2009-05-29 2015-09-08 Koninklijke Philips N.V. Intelligent lighting tile system powered from multiple power sources
US9696223B2 (en) 2012-09-17 2017-07-04 Tk Holdings Inc. Single layer force sensor
US9727031B2 (en) 2012-04-13 2017-08-08 Tk Holdings Inc. Pressure sensor including a pressure sensitive material for use with control systems and methods of using the same
EP4163907A4 (fr) * 2020-06-05 2023-08-30 Guangzhou Haoyang Electronic Co., Ltd. Écran d'affichage de forme unique, lampe à pixels de forme unique, et procédé de commande pour lampe à pixels de forme unique

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WO2013071076A1 (fr) * 2011-11-10 2013-05-16 Tk Holdings Inc. Système d'éclairage sensible à la pression
JP6851197B2 (ja) 2013-05-30 2021-03-31 ティーケー ホールディングス インク．Ｔｋ Ｈｏｌｄｉｎｇｓ Ｉｎｃ． 多次元トラックパッド
US10466826B2 (en) 2014-10-08 2019-11-05 Joyson Safety Systems Acquisition Llc Systems and methods for illuminating a track pad system
CN108364603B (zh) * 2018-01-19 2020-03-31 宗仁科技(平潭)有限公司 一种基于led灯的寻址方法、寻址装置及终端设备
CN113838384B (zh) * 2020-06-05 2023-03-21 广州市浩洋电子股份有限公司 一种异形显示屏、异形像素灯及异形像素灯的控制方法

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US20030057887A1 (en) * 1997-08-26 2003-03-27 Dowling Kevin J. Systems and methods of controlling light systems
WO2003032290A1 (fr) * 2001-10-08 2003-04-17 Imagearray, Ltd. Systeme electronique d'affichage d'informations
US20030210183A1 (en) * 2002-05-09 2003-11-13 Lockheet Martin Corporation Thin client radar and multimedia networking
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2257131A1 (fr) * 2009-05-29 2010-12-01 Koninklijke Philips Electronics N.V. Procédé d'auto-adressage pour système d'éclairage à carreaux
WO2010136956A1 (fr) * 2009-05-29 2010-12-02 Koninklijke Philips Electronics N.V. Procédé d'auto-adressage pour un système d'éclairage à carreaux
US8604718B2 (en) 2009-05-29 2013-12-10 Koninklijke Philips N.V. Auto-addressing method for a tiled lighting system
RU2539877C2 (ru) * 2009-05-29 2015-01-27 Конинклейке Филипс Электроникс Н.В. Способ автоматической адресации для мозаичной системы освещения
US9127820B2 (en) 2009-05-29 2015-09-08 Koninklijke Philips N.V. Intelligent lighting tile system powered from multiple power sources
US9727031B2 (en) 2012-04-13 2017-08-08 Tk Holdings Inc. Pressure sensor including a pressure sensitive material for use with control systems and methods of using the same
US9696223B2 (en) 2012-09-17 2017-07-04 Tk Holdings Inc. Single layer force sensor
EP4163907A4 (fr) * 2020-06-05 2023-08-30 Guangzhou Haoyang Electronic Co., Ltd. Écran d'affichage de forme unique, lampe à pixels de forme unique, et procédé de commande pour lampe à pixels de forme unique

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Publication number Publication date
EP1966784A1 (fr) 2008-09-10
JP2009521006A (ja) 2009-05-28
TW200733041A (en) 2007-09-01
CN101346752A (zh) 2009-01-14

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